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2008 Chelopechene Explosions
The 2008 Chelopechene explosions were a series of explosions that began early on Thursday morning 3 July 2008 at around 6:30 am local time at a munitions depot in the suburb of Chelopechene, 10 kilometres east of the centre of the Bulgarian capital, Sofia. The initial explosions were powerful enough to be heard in the entire capital and surrounding villages. The depot was part of a military facility (''Podelenie 18 250'') that specialised in dismantling obsolete ammunition. Timeline At 6:28 am, Sofia residents were awakened by a powerful, deafening explosion so loud it set off car alarms in districts as far away as Lyulin, some 15 km from the blast. Further east there was great panic among residents as the shockwave shattered windows and some trees were blown down. There was another powerful blast at 6:45 am. Explosions continued throughout the day prompting authorities to evacuate the residents of Chelopechene, Chepintsi and Botunets. A mushroom cloud formed after the fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxiway
A taxiway is a path for aircraft at an airport connecting runways with aprons, hangars, terminals and other facilities. They mostly have a hard surface such as asphalt or concrete, although smaller general aviation airports sometimes use gravel or grass. Most airports do not have a specific speed limit for taxiing (though some do). There is a general rule on safe speed based on obstacles. Operators and aircraft manufacturers might have limits. Typical taxi speeds are 20–30 knots (37–56 km/h; 23–35 mph). High-speed exit Busy airports typically construct high-speed or rapid-exit taxiways to allow aircraft to leave the runway at higher speeds. This allows the aircraft to vacate the runway quicker, permitting another to land or take off in a shorter interval of time. This is accomplished by reducing the angle the exiting taxiway intercepts the runway at to 30 degrees, instead of 90 degrees, thus increasing the speed at which the aircraft can exit the runway onto the taxiway. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosions In Bulgaria
An explosion is a rapid expansion in volume associated with an extreme outward release of energy, usually with the generation of high temperatures and release of high-pressure gases. Supersonic explosions created by high explosives are known as detonations and travel through shock waves. Subsonic explosions are created by low explosives through a slower combustion process known as deflagration. Causes Explosions can occur in nature due to a large influx of energy. Most natural explosions arise from volcanic or stellar processes of various sorts. Explosive volcanic eruptions occur when magma rises from below, it has very dissolved gas in it. The reduction of pressure as the magma rises and causes the gas to bubble out of solution, resulting in a rapid increase in volume. Explosions also occur as a result of impact events and in phenomena such as hydrothermal explosions (also due to volcanic processes). Explosions can also occur outside of Earth in the universe in events suc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2008 Industrial Disasters
8 (eight) is the natural number following 7 and preceding 9. In mathematics 8 is: * a composite number, its proper divisors being , , and . It is twice 4 or four times 2. * a power of two, being 2 (two cubed), and is the first number of the form , being an integer greater than 1. * the first number which is neither prime nor semiprime. * the base of the octal number system, which is mostly used with computers. In octal, one digit represents three bits. In modern computers, a byte is a grouping of eight bits, also called an octet. * a Fibonacci number, being plus . The next Fibonacci number is . 8 is the only positive Fibonacci number, aside from 1, that is a perfect cube. * the only nonzero perfect power that is one less than another perfect power, by Mihăilescu's Theorem. * the order of the smallest non-abelian group all of whose subgroups are normal. * the dimension of the octonions and is the highest possible dimension of a normed division algebra. * the first number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosions In 2008
An explosion is a rapid expansion in volume associated with an extreme outward release of energy, usually with the generation of high temperatures and release of high-pressure gases. Supersonic explosions created by high explosives are known as detonations and travel through shock waves. wikt:subsonic, Subsonic explosions are created by low explosives through a slower combustion process known as deflagration. Causes Explosions can occur in nature due to a large wikt:influx, influx of energy. Most natural explosions arise from volcano, volcanic or supernova, stellar processes of various sorts. Explosive volcanic eruptions occur when magma rises from below, it has very dissolved gas in it. The reduction of pressure as the magma rises and causes the gas to bubble out of solution, resulting in a rapid increase in volume. Explosions also occur as a result of impact events and in phenomena such as hydrothermal explosions (also due to volcanic processes). Explosions can also occur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2008 Gërdec Explosions
At approximately 12 p.m. local time on Saturday, March 15th, 2008, an ex-military ammunition depot in the village of Gërdec in the Vorë Municipality of Albania (14 kilometers from Tirana, the nation's capital), U.S and Albanian munitions experts were preparing to destroy stockpiles of obsolete ammunition. The methodical destruction of the old ammunition was supposed to occur with a series of small, controlled explosions. However, a chain of events led to the entire stockpile detonating simultaneously. Hundreds of houses were demolished within a few kilometres of the depot, while car windows on the Tirana-Durres highway were shattered by the main explosion, which involved more than 400 tonnes of propellant in containers. A large fire caused a series of smaller but powerful explosions that continued until 2 a.m. on Sunday. The explosions could be heard as far away as the Macedonian capital of Skopje, away. Thousands of artillery shells, most of them un-exploded, littered the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgarian Academy Of Sciences
The Bulgarian Academy of Sciences (abbreviated BAS; bg, Българска академия на науките, ''Balgarska akademiya na naukite'', abbreviated ''БАН'') is the National Academy of Bulgaria, established in 1869. The Academy, with headquarters in Sofia, is autonomous and consists of a Society of Academicians, Correspondent Members and Foreign Members. It publishes and circulates different scientific works, encyclopaedias, dictionaries and journals, and runs its own publishing house. The activities are distributed in three main branches: ''Natural, mathematical and engineering sciences''; ''Biological, medical and agrarian sciences'' and ''Social sciences, humanities and art''. They are structured in 42 independent scientific institutes, and a dozen of laboratories and other sections. Julian Revalski has been the president of the BAS since 2016. As of 2021, its budget was 117,8 million leva (€60,2 million). History As Bulgaria was part of the Ottoman E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mladost, Sofia
Mladost ( bg, Младост, meaning "Youth") is a district of Sofia. It is one of the most modern and fast developing areas in the city. it has 114,887 inhabitants which makes it the second-most-populous district in the capital, situated in the south-east end of Sofia, between and Vitosha mountain. The largest business complex in Bulgaria is situated in the south end: Business Park Sofia. Mladost is among the safest and cleanest districts of Sofia. In May 2011 it became one of the first neighbourhoods of Sofia to have a complete cycling route of more than 8 km. Economy The district has a flourishing economy. There are two industrial and scientific zones, "Iztok" and "Gorublyane". "Iztok" has an area of 201 ha and specialises in the production of electronics, machinery and press industry. There are a number of important scientific institutes including the Institute of Hydrology and Meteorology; Library Institute; Institute of Electronics; Institute of Astronomy; Institute of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pancharevo
Pancharevo ( bg, Панчарево, , also transcribed as Pančarevo) is a resort village and district located on the outskirts of Sofia close to Vitosha, Lozenska and Plana mountains and occupies the southeastern part of the Capital Municipality. the village has 3,433 inhabitants, but the district has about 28,000 inhabitants. It is the largest region in Sofia with a total area of . It includes the largest artificial lake in Bulgaria Lake Pancharevo, also as Iskar Reservoir and Pasarel Reservoir, located one above the other. The districts consists of 10 villages, and Pancharevo is the municipal seat: * Bistritsa * German * Kazichene * Kokalyane * Krivina * Lozen * Pancharevo * Pasarel * Plana * Zheleznitsa The district offers excellent conditions for relaxation and tourism for the citizens of the capital. The large dams are used for water sports, fishing, camping and boat trips. There are many historical sights from the Middle Ages which include the ruins of the Urvich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicentre
The epicenter, epicentre () or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Surface damage Before the instrumental period of earthquake observation, the epicenter was thought to be the location where the greatest damage occurred, but the subsurface fault rupture may be long and spread surface damage across the entire rupture zone. As an example, in the magnitude 7.9 Denali earthquake of 2002 in Alaska, the epicenter was at the western end of the rupture, but the greatest damage was about away at the eastern end. Focal depths of earthquakes occurring in continental crust mostly range from . Continental earthquakes below are rare whereas in subduction zone earthquakes can originate at depths deeper than . Epicentral distance During an earthquake, seismic waves propagate in all directions from the hypocenter. Seismic shadowing occurs on the opposite s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richter Scale
The Richter scale —also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale—is a measure of the strength of earthquakes, developed by Charles Francis Richter and presented in his landmark 1935 paper, where he called it the "magnitude scale". This was later revised and renamed the local magnitude scale, denoted as ML or . Because of various shortcomings of the original scale, most seismological authorities now use other similar scales such as the moment magnitude scale () to report earthquake magnitudes, but much of the news media still erroneously refers to these as "Richter" magnitudes. All magnitude scales retain the logarithmic character of the original and are scaled to have roughly comparable numeric values (typically in the middle of the scale). Due to the variance in earthquakes, it is essential to understand the Richter scale uses logarithms simply to make the measurements manageable (i.e., a magnitude 3 quake factors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
